AIM To assess the anatomic effectiveness and complications of the Posterior IVS technique for the treatment of pelvic organ prolapse over a period of 3 years. METHODS A retrospective, single-arm, non-comparative study involving routine, standardised, pre-operative assessment, surgery and follow-up care using the Pelvic Organ Prolapse Quantifications score at 1, 2 and 3 years was performed. Th...

This paper shows that Py and Pypy are practically insecure. If one key is used with about 2 IVs with special differences, with high probability two identical keystreams will appear. This can be exploited in a key recovery attack. For example, for a 16-bye key and a 16-byte IV, 2 chosen IVs can reduce the effective key size to 3 bytes. For a 32-bye key and a 32-byte IV, the effective key size is...

Background First pass myocardial perfusion CMR allows quantification of myocardial blood flow (MBF). MBF estimation with whole-heart tissue response may be useful in a variety of systemic diseases, but can be limited by suboptimal imaging in one or more segments. The interventricular septum (IVS) offers an attractive target for MBF imaging, as it offers higher signal and less partial volume art...

BACKGROUND Animal studies have shown that shear deformation of myocardial sheets in transmural planes of left ventricular (LV) wall is an important mechanism for systolic wall thickening, and normal and shear strains of the LV free wall differ from those of the interventricular septum (IVS). We sought to test whether these also hold for human hearts. METHODS Thirty healthy volunteers (male 23...

A major challenge in instrumental variables (IV) analysis is to find instruments that are valid, or have no direct effect on the outcome and are ignorable. Typically one is unsure whether all of the putative IVs are in fact valid. We propose a general inference procedure in the presence of invalid IVs, called Two-Stage Hard Thresholding (TSHT) with voting. TSHT uses two hard thresholding steps ...

The aim of this study was to assess urinary bladder histopathology induced by the sling materials tension-free vaginal tape (TVT), vypro mesh, and intravaginal slingplasty (IVS). Thirty rats were studied: sham-operated controls, TVT, vypro, and IVS groups. After laparotomy, a 0.5- "e 1-cm piece of mesh was implanted on the anterior bladder wall. The bladder was examined histopathologically afte...

OBJECTIVES This study aimed to evaluate a novel three-dimensional ultrasound (US) guidance system for use in hepatic microwave ablation (MWA). METHODS An in vitro assessment was performed in which users with different degrees of experience were evaluated for accuracy in targeting phantom lesions embedded in agar using US alone, or US in conjunction with the InVision™ System (IVS). An eight-pa...

Recent theoretical studies have shown that conditioning on an instrumental variable (IV), a variable that is associated with exposure but not associated with outcome except through exposure, can increase both bias and variance of exposure effect estimates. Although these findings have obvious implications in cases of known IVs, their meaning remains unclear in the more common scenario where inv...